Toothbrush



@ct. '2, 1923. mmm

G. WICKBERG TOOTHBRUSH Filed May 21 1919 Patented Get. 2, F190 hll f-STTS area GODFREY WICKBERG, 0F SEATTLE, WASHINGTON.

roornnansn.

Application flled may 21,

To all whom it may concern:

Be it known that I, GODFREY WIoKBnao, a citizen of the United States,residin at Seattle, county of King, and State of ashington, haveinvented certain new and useful Improvements in Toothbrushes, of whichthe following is a specification.

This invention relates to tooth brushes andit has for a general objectto provide a novel and improved tooth brush with which both the innerand outer surfaces of the teeth may be conveniently brushed.

The invention also has for an object to provide a. tooth brushpeculiarly adapted for brushing the inner surfaces of the teeth.

Other objects relate to the provision of improved means for mounting thebrush members on a suitable handle.

For further comprehension of the inven-' tion and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and

' and on .opposite faces with longitudinal dovetail grooves26 and 27,which taper inwardly as shown. ,7

The groove 26 has inserted therein a strip 28 to which the bristles 29are fixed in the- .usual manner. This strip 28 preferably corresponds indimensions to the groove 26 so as to preserve the contour of the handlewhen in position.

The groove 27 receives a complementary tail 30 on a strip 31 on which ismounted by a pin 32 a convex base 12' carrying bristles 33.

It is believed that the manner of usin' my improved tooth brush will beapparent rom the foregoing description. In using the brush for cleaningthe inside of the teeth the handle will beinserted'between the teeth andthen moved forwardly to bring the brush into engagement therewith, thebrush then 1919. Serial No. 298,721.

being moved along the teeth in engagement with the inner surfaces of thelatter.

It will be apparent from the above that either of the brush elements canbe removed while the other is being used, thus providing two distinctbrushes, one for brushing $0 the outside and one for brushing the insideof the teeth. Also that-both brushes will fit the same end of thehandle, permitting both brushes to be used alternatel on one end ifdesired. Also that an individual brush for use on either the outside orinside of the teeth is provided.

It is noted that the handle 25 has a tapering longitudinal recess 27 atthe right hand end therbf the brush 33-having its back 7 32' enlar ed toform. a means of attachment thereof eing mounted upon the brush supportcomprising a narrow bod portion 30 which is inserted in the. sai recessand moves longitudinally therein when being detached therefrom, whichbrush support also has an end portion 31 formed with shoulders flush ithand extending beyond the handle.

I provide means to stop undue inward prising the tapering recess 9/7,and also means comprising the dovetail sides of the said recess topartially resist outward movement thereof and, with the co-operation of-movement of the said body portion 30 com- $9 the said shoulders, toprevent lateral movement of the said body portion whenthe handle ismoved sidewise.

Having thus described my invention and set forth the manner of itsconstruction,

what I claim as new, and desire to secure by W Letters Patent, is:-

In a device of the class described, a flattened handle having alongitudinally grooved recess at the end thereof which is dovetailed incross section, a detachable brush supporting member having a shallowbody portion which is dovetailed to be frictionally inserted in therecess of the handle and longitudinally movable in the direction of thehandle when being'detached there- 1100 from, and also having an outerend part formed with shoulders finish with the handle end. and a brushcarried by said support, said shoulders forming means to stop undueinward movement of the brush support.

In testimony whereof I have aiiixed my signature.

' GODFREY WICKBE.

